The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 1994
Filed:
Nov. 19, 1991
Alfred Bubik, Ravensburg, DE;
Hans Dahl, Ravensburg, DE;
Karl Muller, Ravensburg, DE;
Heinz Braun, Ravensburg, DE;
Thomas Schaible, Ravensburg, DE;
Helmut Storr, Berg-Vorberg, DE;
Heinz Steckenreuter, Ravensburg, DE;
Sulzer Escher Wyss GmbH, Ravensburg, DE;
Abstract
The wet section of a twin wire papermaking machine is provided with an open forming roll at the lower wire and with the combination of a suction box at the lower wire and a vacuum suction box at the upper wire. Furthermore, by selecting the elevational position or level of the individual wire sections there can be obtained particularly advantageous conditions for the operation of the papermaking machine throughout a wide field of application, especially heavy types of paper at relatively low operating velocities of the papermaking machine. Gap-former and hybrid-former constructions of the papermaking machine are possible.